Bicyclic aminoacids as intermediates

Abstract

Disclosed are cis, exo- and trans-compounds of the formula I ##STR1## in which n denotes 0,1 or 2, R 1 denotes hydrogen, (C 1 -C 6 )-alkyl which can optionally by substituted by amino, (C 1 -C 4 )-acyl- or bezoylamino, (C 2 -C 6 )-alkenyl, (C 5 -C 9 )-cycloalkyl, (C 5 -C 9 )-cycloalkenyl, (C 5 -C 7 )-cycloalkyl-(C 1 -C 4 )-alkyl, aryl or partially hydrogenated aryl, which can, in each case, be substituted by (C 1 -C 2 )-alkyl, (C 2 -C 2 )-alkoxy or halogen, aryl-(C 1 -C 4 )-alkyl, /which can be substituted as defined previously in the aryl radical/, a monocyclic or bicyclic sulfur or nitrogen and/or nitrogen heterocyclic radical, or a side chain of naturally occurring aminoacid, R 2 denotes hydrogen, (C 1 -C 6 )-alkyl, (C 2 -C 6 )-alkenyl or aryl-(C 1 -C 4 )-alkyl, Y denotes hydrogen or hydroxyl, Z denotes hydrogen or Y and Z together denote oxygen, X denotes (C 1 -C 6 )-alkyl, (C 2 -C 6 )-alkenyl, (C 5 -C 9 )-cycloalkyl or aryl which can be mono-, di- or tri- substituted by (C 1 - C 4 )-alkyl, (C 1 -C 4 )-alkoxy, hydroxyl, halogen, nitro, amino, (C 1 -C 4 )-alkylamino, di-(C 1 -C 4 )-alkylamino or methylenedioxy, or indol-3-yl, or physiologically acceptable salts thereof, a process for the preparation thereof, agents containing them, their use as a medicine and intermediates for the preparation thereof.

We claim: 
     
       1. A compound of the formula ##STR34## wherein the H atoms on the C atoms in the 3a- and (6+n)a-positions are in the trans configuration relative to one another n is 0, 1 or 2; and W' is hydrogen or a group which can be cleaved by hydrogenolysis or acid hydrolysis. 
     
     
       2. A compound as in claim 1 wherein W' is hydrogen, alkyl having 1 to 18 C atoms, or aralkyl having 7 to 10 C atoms. 
     
     
       3. A compound as in claim 1 wherein the hydrogen atoms on the bridgehead C atom in the 3a-position and on the C atom in the 2-position of the bicyclic ring system are on the same side of the reference plane of the ring atoms. 
     
     
       4. A compound as in claim 1 wherein the hydrogen atoms on the bridgehead C atom in the 3a-position and on the C atom in the 2-position of the bicyclic ring system are on the opposite side of the reference plane of the ring atoms. 
     
     
       5. 2β,2aα,7aβ-Octahydroindole-2-carboxylic acid.